diff options
| author | Tim Chen <tim.c.chen@linux.intel.com> | 2006-04-18 22:21:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-19 09:13:51 -0700 |
| commit | cca57c5b5ab164e3c96576fc7739c0a30c2eab72 (patch) | |
| tree | 24a41ba1348d12f25c9e0da3b9b7cbaf4f1ce891 /net/tipc/handler.c | |
| parent | ca99c1da080345e227cfb083c330a184d42e27f3 (diff) | |
[PATCH] Kconfig.debug: Set DEBUG_MUTEX to off by default
DEBUG_MUTEX flag is on by default in current kernel configuration.
During performance testing, we saw mutex debug functions like
mutex_debug_check_no_locks_freed (called by kfree()) is expensive as it
goes through a global list of memory areas with mutex lock and do the
checking. For benchmarks such as Volanomark and Hackbench, we have seen
more than 40% drop in performance on some platforms. We suggest to set
DEBUG_MUTEX off by default. Or at least do that later when we feel that
the mutex changes in the current code have stabilized.
Signed-off-by: Tim Chen <tim.c.chen@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'net/tipc/handler.c')
0 files changed, 0 insertions, 0 deletions